Press-fitting type water jacket degassing device

Abstract

The utility model discloses a press-fitting type water jacket degassing device, relates to the technical field of engine degassing, and aims to solve the problem that when a front-engine front-wheel-drive (FF) engine is changed into a longitudinally-arranged rear-wheel-drive (FR) engine, the position of the highest point of a cylinder cover water jacket of the FGDI engine is changed, so that the exhaust effect is influenced, and the press-fitting type water jacket degassing device comprises a cylinder cover, a cylinder cover front end face is arranged on the upper portion of the cylinder cover, a cylinder cover exhaust portion is arranged in the middle of the cylinder cover, and the cylinder cover is provided with a cylinder cover upper water jacket desilting hole and a cylinder cover water jacket. Through the design of the highest position of the sand discharging hole of the water jacket on the cylinder cover, the problem of air discharging of the water jacket of the cylinder cover when a front-engine front-drive turbocharged engine is designed into a longitudinal rear-drive turbocharged engine is solved, and air generated in the water jacket of the cylinder cover passes through the sand discharging hole of the water jacket on the cylinder cover and then is discharged through a connector and an exhaust steel pipe. And the phenomena of local overheating and cavitation of the water jacket of the cylinder cover are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of engine degassing, in particular to a press-fit water jacket degassing device. Background Art

[0002] For large-bore engines, reliability is the most important thing. To ensure reliability, when there is a slight leak from the air side to the water side of the engine during use, it should not affect the normal use of the engine. The cooling system is required to discharge the gas (air or exhaust gas) in the coolant in a timely manner to prevent air blockage in the cooling system or air accumulation in front of the water pump, which will cause the water pump performance to decline and affect the normal use of the engine.

[0003] At present, the layout of the TGDI engine in the whole vehicle is front-mounted, front-wheel drive (FF), and the cylinder head large circulation water outlet position is the highest point of the cylinder head water jacket. The gas generated in the cylinder head water jacket can be discharged from the cylinder head large circulation water outlet position. If the front-mounted, front-wheel drive TGDI engine is designed as a longitudinal rear-wheel drive engine, the cylinder head water outlet position is at the rear end of the engine. Because the engine is tilted backward at an angle of 3°-5° in the whole vehicle layout, the highest point position of the cylinder head water jacket also changes. The highest point position is on the exhaust side of the cylinder head near the front end water jacket sand discharge hole. In order to solve the problem of exhausting the cylinder head water jacket of the longitudinal TGDI engine, it is necessary to add a venting device at the front end of the cylinder head exhaust side. Therefore, the development of a press-fit water jacket degassing device is a new issue that needs to be solved urgently. Utility Model Content

[0004] In order to solve the above problems, that is, to solve the problems raised by the above background technology, the utility model proposes a press-fit water jacket degassing device, which includes a cylinder head, a cylinder head front end face is provided at the upper part of the cylinder head, a cylinder head exhaust part is provided at the middle part of the cylinder head, the cylinder head is provided with a cylinder head upper water jacket sand discharge hole and a cylinder head water jacket, the cylinder head upper water jacket sand discharge hole is connected with the cylinder head water jacket, one end of the joint is fixed to the cylinder head by a flange bolt, the lower part of the joint is press-fitted into the cylinder head upper water jacket sand discharge hole by an interference fit through an axial hole, and one end of the exhaust steel pipe is threadedly fitted to the joint.

[0005] The utility model is further configured as follows: the sand discharge hole of the water jacket on the cylinder head is the highest position of the water jacket of the cylinder head.

[0006] The utility model is further configured as follows: the joint cooperates with the shaft hole of the sand discharge hole of the water jacket on the cylinder head to achieve sealing through the sealant TB1386D.

[0007] The utility model is further configured as follows: the upper end of the joint is in a square shape, and the upper end surface is a plane, which can provide clamping and positioning for the cutting processing and assembly press of the joint.

[0008] The utility model is further configured as follows: the joint and the exhaust steel pipe are matched with PT1 / 8 inner and outer tapered threads, and sealing is achieved by applying thread sealant TB1324N.

[0009] The beneficial technical effects of the utility model are as follows: the utility model solves the problem of venting the cylinder head water jacket when a front-mounted, front-wheel-drive turbocharged engine is designed as a longitudinally mounted, rear-wheel-drive turbocharged engine by designing the sand-draining hole of the water jacket on the cylinder head at the highest position, and venting air at this position; the installation direction of the joint is limited by the flange bolts, thereby determining the direction in which the exhaust steel pipe extends, thereby avoiding interference with other parts of the engine; the gas generated in the cylinder head water jacket is discharged through the sand-draining hole of the water jacket on the cylinder head, and then through the joint and the exhaust steel pipe, thereby avoiding local overheating of the cylinder head water jacket and cavitation; the device is easy to install, has high processability, and has strong sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The utility model is shown in the structural diagram.

[0011] Figure 2 The AA cross-sectional view of the present invention is shown.

[0012] Figure 3 The schematic diagram of the structure of the joint part of the utility model is shown.

[0013] Figure 4 A BB cross-sectional view of the present invention is shown.

[0014] Figure numerals: 1, cylinder head, 2, front end face of cylinder head, 3, exhaust part of cylinder head, 4, sand discharge hole of water jacket on cylinder head, 5, water jacket of cylinder head, 6, joint, 7, exhaust steel pipe, 8, flange bolt. DETAILED DESCRIPTION

[0015] Please refer to the attached Figure 1-Figure 4 Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0016] The utility model proposes a press-fit water jacket degassing device. When the device is used, at the front end of the cylinder head exhaust part 3, the cylinder head water jacket sand discharge hole 4 is the highest point of the cylinder head water jacket 5. Degassing at this point solves the degassing problem of the cylinder head water jacket 5 of the front-mounted front-drive turbocharged engine designed as a longitudinal rear-drive turbocharged engine. Under the limit of the flange bolt 8, the installation direction of the joint 6 is fixed, thereby determining the direction in which the exhaust steel pipe 7 extends out, avoiding interference with other parts of the engine. When one end of the joint 6 is press-fitted onto the cylinder head water jacket sand discharge hole 4, an axial hole interference fit is adopted, and a axial hole matching special Sealing is achieved by using sealant TB1386D to meet the requirements of structural stability and prevent loosening. The shape characteristics of the joint 6 facilitate the cutting and assembly of the joint 6 and provide clamping and positioning for the press machine. The joint 6 and the exhaust steel pipe 7 use PT1 / 8 internal and external tapered threads, and are sealed by applying thread sealant TB1324N, which ensures the sealing between the joint 6 and other parts and avoids gas leakage during exhaust. The gas generated in the cylinder head water jacket 5 is first discharged through the water jacket sand discharge hole 4 on the cylinder head, and then discharged through the joint 6 and the exhaust steel pipe 7, avoiding local overheating of the cylinder head water jacket 5 and cavitation.

[0017] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0018] In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0020] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0021] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A press-fit water jacket degassing device, comprising a cylinder head (1), characterized in that: The cylinder head (1) is provided with a cylinder head front end surface (2) at the upper part, and a cylinder head exhaust portion (3) is provided at the middle part of the cylinder head (1). The cylinder head (1) is provided with a cylinder head upper water jacket sand discharge hole (4) and a cylinder head water jacket (5). The cylinder head upper water jacket sand discharge hole (4) is connected to the cylinder head water jacket (5). One end of a joint (6) is fixed to the cylinder head (1) by a flange bolt (8). The lower part of the joint (6) is press-fitted into the cylinder head upper water jacket sand discharge hole (4) by an interference fit through an axial hole. One end of an exhaust steel pipe (7) is threadedly fitted to the joint (6).

2. A press-fit water jacket degassing device according to claim 1, characterized in that: The sand discharge hole (4) on the cylinder head water jacket is the highest position of the cylinder head water jacket (5).

3. A press-fit water jacket degassing device according to claim 1, characterized in that: The joint (6) cooperates with the axial hole of the water jacket sand discharge hole (4) on the cylinder head to achieve sealing through the sealant TB1386D.

4. A press-fit water jacket degassing device according to claim 1, characterized in that: The upper end of the joint (6) is square in shape, and the upper end surface is a plane.

5. A press-fit water jacket degassing device according to claim 1, characterized in that: The joint (6) and the exhaust steel pipe (7) are matched with PT1 / 8 internal and external tapered threads.

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